I tend to stay outside the core city's gates, where it is a little more wild, with a meadow that leads to a forest. I see the city with lots of white marble, gold, silver, and sometimes gemstones.

Interesting. I've heard a few other angels and celestial types talk about this silver/white City up there too. (I have my own ideas about a sky/celestial realm, city, something but I assume it's not related to Heaven in this sense, since I'm not angelic.)